feat(bar): 添加状态栏 bar 模块的基础架构和 workspace 指示器

src/bar/types.h

@@ -0,0 +1,50 @@
+#pragma once
+
+#include <stddef.h>
+#include <stdint.h>
+#include <zdwm/bar.h>
+#include <zdwm/types.h>
+
+#include "base/color.h"
+
+typedef struct bar_x_region_t {
+  int32_t start;
+  int32_t end;
+} bar_x_region_t;
+
+typedef struct bar_cell_t {
+  zdwm_icon_t icon;
+  const char *text;
+  const color_t *fg;
+  const color_t *bg;
+  bar_x_region_t region;
+  bool show_indicator;
+  bool dirty;
+} bar_cell_t;
+
+struct zdwm_bar_item_t {
+  bar_cell_t *cells;
+  size_t count;
+  bar_x_region_t region;
+  void *state;
+  uint8_t cell_padding;
+  uint8_t indicator_width;
+  bool dirty;
+};
+
+typedef struct bar_side_t {
+  zdwm_bar_side_type_t type;
+  zdwm_bar_item_t *items;
+  size_t count;
+  size_t capacity;
+  bar_x_region_t region;
+} bar_side_t;
+
+typedef struct bars_t {
+  size_t count;
+  int32_t height;
+  bool show_top; /* 如果为 false 则 bar 显示屏幕底部 */
+  bool visible;
+
+  zdwm_bar_config_t config;
+} bars_t;